Compared with regular C3 Picassos, the Aircross features jacked up suspension, plastic wheel arch and sill extensions, bash plate-style mouldings, and a spare tyre mounted across the tailgate on a swing-out arm.
While these modifications may create the impression of a go-anywhere vehicle, the Aircross is offered only in front-wheel drive. Motivation comes from a 1.6-litre motor that generates 90kW of power and 161Nm of torque when fuelled by ethanol.
Citroen has yet to fully detail the Aircross Lunar concept, but we can see that the production Aircross' plastic additions have now been painted a shade of moon grey.
Two large carrier pods are strapped down to the car's roof racks, and knobbly off-road tyres have been fitted to the show car. At the rear, the swing-out arm no longer features a spare tyre on the end, but rather something that resembles a lunar briefcase.
We're guessing, though, that whatever other changes Citroen has made, the Aircross Lunar hasn't been engineered to operate successfully in the airless, low-gravity environment of the moon.
And we're fairly certain that the radiation hazard symbol on the tailgate is there purely for show.